package string;

public class StringBuilderDemo {
    public static void main(String[] args) {
        String s="a";
        StringBuilder sb=new StringBuilder("g");
        for(int i=0;i<100000;i++){
            s=s+i;
          //sb.append("\t"+i);
        }
        System.out.println(s);
        System.out.println("完毕");
    }
}
